134 строки
3.1 KiB
C
134 строки
3.1 KiB
C
/*
|
|
* net/9p/9p.c
|
|
*
|
|
* 9P entry point
|
|
*
|
|
* Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net>
|
|
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
|
|
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to:
|
|
* Free Software Foundation
|
|
* 51 Franklin Street, Fifth Floor
|
|
* Boston, MA 02111-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <net/9p/9p.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/parser.h>
|
|
#include <net/9p/transport.h>
|
|
#include <linux/list.h>
|
|
|
|
#ifdef CONFIG_NET_9P_DEBUG
|
|
unsigned int p9_debug_level = 0; /* feature-rific global debug level */
|
|
EXPORT_SYMBOL(p9_debug_level);
|
|
module_param_named(debug, p9_debug_level, uint, 0);
|
|
MODULE_PARM_DESC(debug, "9P debugging level");
|
|
#endif
|
|
|
|
extern int p9_mux_global_init(void);
|
|
extern void p9_mux_global_exit(void);
|
|
|
|
/*
|
|
* Dynamic Transport Registration Routines
|
|
*
|
|
*/
|
|
|
|
static LIST_HEAD(v9fs_trans_list);
|
|
static struct p9_trans_module *v9fs_default_transport;
|
|
|
|
/**
|
|
* v9fs_register_trans - register a new transport with 9p
|
|
* @m - structure describing the transport module and entry points
|
|
*
|
|
*/
|
|
void v9fs_register_trans(struct p9_trans_module *m)
|
|
{
|
|
list_add_tail(&m->list, &v9fs_trans_list);
|
|
if (m->def)
|
|
v9fs_default_transport = m;
|
|
}
|
|
EXPORT_SYMBOL(v9fs_register_trans);
|
|
|
|
/**
|
|
* v9fs_match_trans - match transport versus registered transports
|
|
* @arg: string identifying transport
|
|
*
|
|
*/
|
|
struct p9_trans_module *v9fs_match_trans(const substring_t *name)
|
|
{
|
|
struct list_head *p;
|
|
struct p9_trans_module *t = NULL;
|
|
|
|
list_for_each(p, &v9fs_trans_list) {
|
|
t = list_entry(p, struct p9_trans_module, list);
|
|
if (strncmp(t->name, name->from, name->to-name->from) == 0)
|
|
return t;
|
|
}
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(v9fs_match_trans);
|
|
|
|
/**
|
|
* v9fs_default_trans - returns pointer to default transport
|
|
*
|
|
*/
|
|
|
|
struct p9_trans_module *v9fs_default_trans(void)
|
|
{
|
|
if (v9fs_default_transport)
|
|
return v9fs_default_transport;
|
|
else if (!list_empty(&v9fs_trans_list))
|
|
return list_first_entry(&v9fs_trans_list,
|
|
struct p9_trans_module, list);
|
|
else
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(v9fs_default_trans);
|
|
|
|
|
|
/**
|
|
* v9fs_init - Initialize module
|
|
*
|
|
*/
|
|
static int __init init_p9(void)
|
|
{
|
|
int ret = 0;
|
|
|
|
p9_error_init();
|
|
printk(KERN_INFO "Installing 9P2000 support\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* v9fs_init - shutdown module
|
|
*
|
|
*/
|
|
|
|
static void __exit exit_p9(void)
|
|
{
|
|
printk(KERN_INFO "Unloading 9P2000 support\n");
|
|
}
|
|
|
|
module_init(init_p9)
|
|
module_exit(exit_p9)
|
|
|
|
MODULE_AUTHOR("Latchesar Ionkov <lucho@ionkov.net>");
|
|
MODULE_AUTHOR("Eric Van Hensbergen <ericvh@gmail.com>");
|
|
MODULE_AUTHOR("Ron Minnich <rminnich@lanl.gov>");
|
|
MODULE_LICENSE("GPL");
|